<template>
  <div class="app">
    <h3>我是App组件</h3>
    <Suspense>
      <template v-slot:default>
        <Child></Child>
      </template>
      <template v-slot:fallback>
        <h3>稍等，加载中。。。</h3>
      </template>
    </Suspense>
  </div>

</template>

<script>
  // import Child from "@/components/Child";//静态引入

  import {defineAsyncComponent} from "vue";
  const Child = defineAsyncComponent(() => import('./components/Child'))//异步引入

  export default {
    name: 'App',
    components: {Child},
  }
</script>

<style>
.app {
  background-color: gray;
  padding: 10px;
}
</style>
